Designation C1083 − 06 (Reapproved 2015) Standard Test Method for Water Absorption of Cellular Elastomeric Gaskets and Sealing Materials1 This standard is issued under the fixed designation C1083; the[.]
Trang 1Designation: C1083−06 (Reapproved 2015)
Standard Test Method for
Water Absorption of Cellular Elastomeric Gaskets and
Sealing Materials1
This standard is issued under the fixed designation C1083; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision A number in parentheses indicates the year of last reapproval A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1 Scope
1.1 This test method covers those cellular elastomeric
com-pounds that are manufactured in preformed shapes such as
gaskets, and that are used as compression seals for glazing
purposes and as sealing materials in other applications in
building construction
1.2 The values stated in SI units are to be regarded as the
standard The values given in parentheses are provided for
information purposes only
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use It is the
responsibility of the user of this standard to establish
appro-priate safety and health practices and determine the
applicabil-ity of regulatory limitations prior to use
2 Referenced Documents
2.1 ASTM Standards:2
C717Terminology of Building Seals and Sealants
D3182Practice for Rubber—Materials, Equipment, and
Pro-cedures for Mixing Standard Compounds and Preparing
Standard Vulcanized Sheets
3 Terminology
3.1 Definitions—Refer to TerminologyC717for the
follow-ing terms used in this test method: cell, compound,
compres-sion gasket, elastomer, elastomeric, gasket, glazing, seal, and
sealing material
4 Significance and Use
4.1 This test method will quantify the water absorption
characteristics of cellular elastomeric gaskets and sealing
materials It is a test that enables the specifier to exercise engineering judgment in the selection of materials
5 Apparatus
5.1 Vessel, of potable water of dimensions appropriate to
permit proper submergence of the specimens as described in Section9
5.2 Stand and Clamps, to hold specimens.
5.3 Balance, triple-beam, accurate to 0.01 g.
5.4 Paper, lint-free blotting.
6 Comparison to Other Standards
6.1 The ASTM Committee with jurisdiction over this stan-dard1is not aware of any comparable standards published by other organizations
7 Sampling and Test Specimens
7.1 Sampling:
7.1.1 When possible, the manufactured product or a suitable section thereof shall be used for the test Representative samples of the lot being examined shall be selected at random 7.1.2 When the manufactured product does not lend itself to testing or to the taking of test specimens because of compli-cated shape, small size, metal or fabric inserts, or other reasons, standard test strips shall be prepared The standard specimens for testing shall be as specified in7.2.2
7.1.3 The manufacturer shall, upon the request of the purchaser at the time of ordering, furnish sufficient test specimens prepared in accordance with Practice D3182
7.2 Test Specimens:
7.2.1 The test specimen shall be 460 mm (18 in.) long 7.2.2 Test specimens that are to be prepared as described by
7.1.2shall be 460 mm (18 in.) long, 13 mm (1⁄2in.) thick, and
25 mm (1 in.) wide
7.2.3 All test specimens shall be made from the same compound and shall have the same apparent density and state
of cure as the product they represent
7.2.4 This test method requires ten test specimens
8 Conditioning
8.1 Condition all test specimens at 21.1 6 1.1°C (70 6 2°F) for at least 24 h prior to testing
1 This test method is under the jurisdiction of ASTM Committee C24 on Building
Seals and Sealants and is the direct responsibility of Subcommittee C24.73 on
Compression Seal and Lock Strip Gaskets.
Current edition approved Dec 1, 2015 Published December 2015 Originally
approved in 1987 Last previous edition approved in 2011 as C1083 – 06 (2011).
DOI: 10.1520/C1083-06R15.
2 For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959 United States
1
Trang 29 Procedure
9.1 Identify each test specimen and individually weigh and
record the information
9.2 Secure the test specimens in a vertical position using
stands and clamps Clamp at both ends of each specimen so
that the specimens are bent in a U-shape
9.3 Submerge only the center 406 mm (16 in.) of the test
specimens with the bottom of the loop 152 mm (6 in.) below
the water line, and the cut ends of the specimen out of the
water
9.4 Test specimens shall be submerged in potable water at
23.9 6 1.1°C (75 6 2°F) for a period of 24 h
9.5 Remove the test specimens from the water and blot with
lint-free paper before weighing The blotting should be done
with as little pressure as possible so that only the surface water
is removed from the specimen
9.6 Weigh each test specimen and record the values
10 Report
10.1 Report the following information:
10.1.1 Identification of each test specimen
10.1.2 Average weight of test specimens before testing
10.1.3 Average weight of test specimens after testing
10.1.4 Average weight of water absorbed by the test
speci-mens
10.1.5 Variation, if any, from the specified test procedure
11 Precision and Bias 3
11.1 The precision and bias calculations for this test method are based on the results of four laboratories testing six materials
11.2 The between-laboratory accuracy of this test method in the determination of water absorption (based on an average over four laboratories) is 0.78 for the six test materials evaluated This means that if the absolute value of the difference between two values is greater than 0.78, then 95 %
of the time this represents a statistical difference
11.3 Limited information is available on the precision of this test method Only one sample of each material has been tested in four laboratories using this test method Past experi-ence has shown that the within-laboratory precision of this test method is expected to be less than the between-laboratory accuracy
12 Keywords
12.1 absorption; cellular; elastomeric; gaskets; glazing; sealing materials; water
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C1083 − 06 (2015)
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